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Medium severity6.5NVD Advisory· Published Mar 4, 2026· Updated Jun 17, 2026

CVE-2026-29085

CVE-2026-29085

Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using streamSSE() in Streaming Helper, the event, id, and retry fields were not validated for carriage return (\r) or newline (\n) characters. Because the SSE protocol uses line breaks as field delimiters, this could allow injection of additional SSE fields within the same event frame if untrusted input was passed into these fields. This issue has been patched in version 4.12.4.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
hononpm
< 4.12.44.12.4

Affected products

16

Patches

Vulnerability mechanics

References

4

News mentions

0

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